I have suspected that guys like Zito, the '06 Maddux have something to do w/ air pressure or humidty that is not customarily reported in the baseball press that would affect the behavior of their pitches.

A wee bit off topic, but I read on either RotoWorld or ProSportsDaily.com that the A's are demanding either Wright or Reyes from the Mets for Zito, while the Nationals are demanding Lastings Milledge for Livan.